Patents by Inventor Teemu Pohjola

Teemu Pohjola has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20110298205
    Abstract: An identification document including a translucent portion is provided. The translucent portion has a first side and a second side, and includes a first personalized information. The first personalized information includes a second personalized information which is hidden in the first personalized information when viewed from the first side of the translucent portion. A filtering device is attached to or formed in the second side of the translucent portion. The filtering device is configured to reveal the hidden second personalized information. The second personalized information appears superimposed onto the first personalized information when viewed from the second side of the translucent portion, and remains hidden when viewed from the first side of the translucent portion.
    Type: Application
    Filed: December 18, 2009
    Publication date: December 8, 2011
    Applicant: GEMALTO OY
    Inventor: Teemu Pohjola
  • Publication number: 20110158472
    Abstract: The invention relates to a method for securing a first image by means of graphical anti-counterfeiting means and to a method for securing an identification document with such graphical anti-counterfeiting means. The invention also relates to a secure identification document that allows detecting either a fraudulent modification of the existing personalization or a fraudulent falsified document. For that, graphical anti-counterfeiting image is inserted into an identification image, each image being defined by a plurality of pixels. The characteristic level (for example grey level) of each pixel i of the graphical anti-counterfeiting image is linked, by a function F, to a matrix ?i of pixels defined in the identification image, said pixels of the matrix ?i surrounding the location i of a pixel of the graphical anti-counterfeiting image, said function F taking into account the characteristic level (for example average grey level) G(?i) and the texture level T(?i) of said matrix ?i.
    Type: Application
    Filed: July 7, 2009
    Publication date: June 30, 2011
    Applicants: GEMALTO SA, GEMALTO OY
    Inventors: Teemu Pohjola, Christophe Mourtel, Frédéric Ros
  • Publication number: 20100260372
    Abstract: Guilloches (preventing modification) and watermarking (preventing substitution) technologies are combined to protect a medium, such as a card or a passport. The major idea stems from their dual role for medium authentication: the presence of one is needed to check the validity of the other one. By nature, the guilloche network is visible in the image and easily detectable by image processing. This network is therefore used to generate reference points as elements of synchronization to retrieve watermark information originally embedded in the medium that has submitted an RST transformation. These reference points are by nature stronger than any other means involving invisible templates in the spatial or Fourier space.
    Type: Application
    Filed: November 28, 2008
    Publication date: October 14, 2010
    Applicants: GEMALTO SA, GEMALTO OY
    Inventors: Frederic Ros, Christophe Mourtel, Teemu Pohjola
  • Publication number: 20100047488
    Abstract: A data carrier is provided having a see-through portion (24) that allows revealing security features (36) with a different appearance on each of its sides (S1, S2) under special lighting conditions, and a method for making such a data carrier. The see-through portion has an improved security, which is more difficult to reproduce by infringers.
    Type: Application
    Filed: December 5, 2007
    Publication date: February 25, 2010
    Applicant: GEMALTO OY
    Inventors: Taru Syrjanen, Teemu Pohjola
  • Publication number: 20090006958
    Abstract: An apparatus for providing an object selection mechanism for touch screen devices may include a processing element. The processing element may be configured to receive an indication of a detection of an event associated with a display, determine a type of the event, determine a candidate object associated with the type of the event, and generate a user interface component based on the determination of the candidate object.
    Type: Application
    Filed: June 29, 2007
    Publication date: January 1, 2009
    Inventors: Teemu Pohjola, Roope Rainisto, Ashley Colley, Piiastiina Tikka, Morten Elvang-Goransson
  • Publication number: 20080309064
    Abstract: An information page (1) of a security document, includes: an information part (3), on the upper or lower surface of which part of the information recorded on the information page (1) can be seen; and a flexible connecting part (2) with good bending strength for attaching the information page (1) to a security document. To ensure that detaching the information part and the connecting part from each other leaves visible marks, the connecting part (2) has a netlike structure, and the connecting part (2) is arranged to penetrate into the information part (3) in the immediate vicinity of the upper or lower surface of the information part.
    Type: Application
    Filed: November 7, 2006
    Publication date: December 18, 2008
    Applicant: SETEC OY
    Inventors: Jari Herlin, Maila Korhonen, Teemu Pohjola, Taru Syrjanen, Mika Holmberg
  • Publication number: 20080100585
    Abstract: A method for controlling selection of list items displayed in a list element having one user operation mode on a touch sensitive display of an apparatus further including a controller, the touch sensitive display being configured to detect user input actions via a writing tool, the method includes detecting a first user input on the touch sensitive display, the first user input indicating a first selection of list items of the list element; selecting the first selection of list items; detecting a second user input on the touch sensitive display, the second user input indicating a second selection of at least one list item being distinct from the first selection of list items while the first selection is to remain selected; and selecting the second selection of at least one list item while the first selection of list items remains selected. A method is thus provided allowing the user to indicate a selection of a two separate selections of list items, only using the writing tool on the touch sensitive display.
    Type: Application
    Filed: November 1, 2006
    Publication date: May 1, 2008
    Inventor: Teemu POHJOLA
  • Publication number: 20050195901
    Abstract: An encoder is provided with an additional coding feature that comprises a time-related term added to a traditional cost function that uses only distortion and byte usage for calculating cost. The time-related term comprises the time that a real decoder needs for decoding a block, and a coefficient. The use of the time-related term will often result in a decision to select a compression mode that is faster to decode than a mode obtained with the traditional cost function. Preferably each receiving terminal belongs to a certain capacity group having specific additional coding features. A single original video is encoded individually for each capacity group according to the additional features of the capacity group in question. The individual encoding relating to each group guarantees that decoding times of frames absolutely or in average remain below the time that real receiving terminals need for decoding encoded frames.
    Type: Application
    Filed: March 3, 2004
    Publication date: September 8, 2005
    Inventors: Teemu Pohjola, Martti Kesaniemi, Kalle Soukka, Tero Myllymaki
  • Publication number: 20040184526
    Abstract: The invention relates to encoding and decoding streamed data. An encoder reallocates an amount of bits from the time frame of a compressed scene having rich information content to the time frame of a compressed scene having low information content. Thus, bits between scenes of different compressibility/quality/content are reallocated such that the available constant bandwidth is fully utilized. Further, the encoder incorporates markers into the stream, each marker comprising instructions to the decoder like information about the size and duration of the scene following the marker.
    Type: Application
    Filed: December 22, 2003
    Publication date: September 23, 2004
    Inventors: Kari Penttila, Teemu Pohjola
  • Publication number: 20040151395
    Abstract: This invention relates to encoding and decoding techniques concerning images. The invention utilizes the principle that an image or a part thereof may contain a dominating direction that is other than a horizontal or vertical direction Using DCT components, which are designed to this dominating spatial frequency, fewer non-zero components are needed for the transformation than if the normal DCT components are used, thereby enabling more efficient compression of the image.
    Type: Application
    Filed: December 22, 2003
    Publication date: August 5, 2004
    Inventors: Martti Kesaniemi, Teemu Pohjola
  • Publication number: 20040146011
    Abstract: A video stream is first transmitted at a low quality level wherein it may be displayed almost in real-time. The user may requests the same video again with a better quality level. Upon receipt the request, the sending terminal transmits extra information. The receiving terminal adds this extra information to the original stream to form a cumulative stream. The cumulative stream is now displayed. If its quality level still does not satisfy the user, he may again request the same video. In response to the request the sending terminal sends new extra information that the receiving terminal adds to the cumulative stream.
    Type: Application
    Filed: December 22, 2003
    Publication date: July 29, 2004
    Inventors: Martti Kesaniemi, Teemu Pohjola
  • Publication number: 20030223633
    Abstract: This invention relates to techniques for compressing images, particularly color images. The invention forms a lightly decodable compression technique for the color information in digital color images and video. The invention is based on an idea that an active color area in a color map is defined. The active area comprises all colors of the image under compression. Further a coordinate system is formed for the active area. The colors in the active area can be quantized using a grid, wherein each node of the grid represents a color. Since the active area is smaller than the total color map area, fewer bits are needed to index the active colors in the active area. Saving the bits increases the compression of colors when compressing the image. The color values of the image are mapped using the indices of the active color area.
    Type: Application
    Filed: June 17, 2002
    Publication date: December 4, 2003
    Inventor: Teemu Pohjola
  • Publication number: 20030081852
    Abstract: This invention relates to encoding and decoding images. The invention is a variant of the cascaded VQ with certain improvements acquired from the DCT and DWT approaches. The fundamental aspects of the invention are that codebooks are pre-processed when training them for predetermining the frequency distribution of the resulting codevectors, and each block is independently coded and decoded using a variable number of stages of difference coding needed for coding the particular block.
    Type: Application
    Filed: November 19, 2001
    Publication date: May 1, 2003
    Inventor: Teemu Pohjola